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the ratio of time someone is sleeping ti the time they are awake is 3:5,what is the nmber of hours they are sleeping ?

asked in maths

seacommander answers:

In a 24 hour day they would be sleeping for 9 hours and awake for 15.

To calculate this add the two figures in your ratio 3+5 = 8
Then divide 24 by 8 + 3
Multiply 3 by 3 (from your ratio) to give the sleeping hours = 9
Multiply 3 by 5 (also from you ratio) to give the waking hours = 15
This makes a total of 24 hours for the day; 9 asleep 15 awake.

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